Stainless Steel BSPT-to-NPT Pipe Adapters

Filter by

System of Measurement

Pipe Size

Fitting Type

Material

304/304L Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

Thread Type

Gender

For Use With

Length

Threading

Threaded on Both Ends

Maximum Pressure @ Temperature

Fitting Material

304/304L Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

Specifications Met

Pipe Material

304/304L Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

Flange Material

304 Stainless Steel

304/304L Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

Dash Size

Performance

Chemical Resistant

Corrosion Resistant

Precision

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

REACH

Compliant

RoHS

Compliant

Export Control Classification Number (ECCN)

2B999

DFARS Specialty Metals

Exempt

Pressure Rating

Low Pressure

Extreme Pressure

Maximum Steam Pressure @ Temperature

Fabrication

213 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

Fitting Type

Pipe

Pair with fittings to transfer water, air, and other materials

124 products

Reducing Adapter

Join pipe of different sizes and fitting connections

28 products

Fitting Type

Reducer

Transition between pipe of different sizes

28 products

Performance

Precision

The tightest tolerances of our threaded fittings

18 products

Precision Extreme-Pressure Stainless Steel Threaded Pipe Fittings

Made to tighter tolerances than other stainless steel pipe fittings, these are also known as instrumentation fittings. The male threads are rolled for extra strength in extreme-pressure applications. Fittings are commonly used to connect equipment in gas and hydraulic fluid lines.

Straight Adapters

316 Stainless Steel—Fittings are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel fittings, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.

	Pipe Size		Dash Size			316 Stainless Steel
	(A)	(B)	(A)	(B)	Body Shape	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Female × BSPT Male
Female x Male


		1/8	1/8	02	02	Hex	6,100 psi @ 72° F	6,100 psi @ 300° F	4092K11	000000


		1/4	1/4	04	04	Hex	6,200 psi @ 72° F	6,200 psi @ 300° F	4092K12	00000
		3/8	3/8	06	06	Hex	5,000 psi @ 72° F	5,000 psi @ 300° F	4092K13	00000
		1/2	1/2	08	08	Hex	4,600 psi @ 72° F	4,600 psi @ 300° F	4092K14	00000
		3/4	3/4	12	12	Hex	4,300 psi @ 72° F	4,300 psi @ 300° F	4092K15	00000
		1	1	16	16	Hex	4,100 psi @ 72° F	4,100 psi @ 300° F	4092K16	000000


		NPT Male × BSPT Male
		Male x Male


				1/8	1/8	02	02	Hex	9,100 psi @ 72° F	9,100 psi @ 300° F	4092K81	00000


				1/4	1/4	04	04	Hex	7,500 psi @ 72° F	7,500 psi @ 300° F	4092K32	00000
				3/8	3/8	06	06	Hex	7,200 psi @ 72° F	7,200 psi @ 300° F	4092K83	00000
				1/2	1/2	08	08	Hex	6,600 psi @ 72° F	6,600 psi @ 300° F	4092K84	00000
				3/4	3/4	12	12	Hex	6,400 psi @ 72° F	6,400 psi @ 300° F	4092K85	00000
				1	1	16	16	Hex	4,600 psi @ 72° F	4,600 psi @ 300° F	4092K86	00000


				BSPT Female × NPT Male
				Female x Male


						1/8	1/8	02	02	Hex	6,100 psi @ 72° F	6,100 psi @ 300° F	4092K26	00000


						1/4	1/4	04	04	Hex	6,200 psi @ 72° F	6,200 psi @ 300° F	4092K21	00000
						3/8	3/8	06	06	Hex	5,000 psi @ 72° F	5,000 psi @ 300° F	4092K22	00000
						1/2	1/2	08	08	Hex	4,600 psi @ 72° F	4,600 psi @ 300° F	4092K23	00000
						3/4	3/4	12	12	Hex	4,300 psi @ 72° F	4,300 psi @ 300° F	4092K24	00000
						1	1	16	16	Hex	4,100 psi @ 72° F	4,100 psi @ 300° F	4092K25	000000

Low-Pressure Stainless Steel Threaded Pipe Fittings

Use these fittings in a low-pressure pipe line.

Straight Adapters

Male × Male

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

	Pipe Size						304 Stainless Steel		316 Stainless Steel
	(A)	(B)	Pressure Class	Body Shape	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each		Each
BSPT Male × NPT Male



		1/8	1/8	150	Hex	300 psi @ 72° F	150 psi @ 350° F	4810T221	00000	5273N141	00000


		1/4	1/4	150	Hex	300 psi @ 72° F	150 psi @ 350° F	4810T222	00000	5273N142	00000
		3/8	3/8	150	Hex	300 psi @ 72° F	150 psi @ 350° F	4810T223	00000	5273N143	00000
		1/2	1/2	150	Hex	300 psi @ 72° F	150 psi @ 350° F	4810T224	00000	5273N144	00000
		3/4	3/4	150	Hex	300 psi @ 72° F	150 psi @ 350° F	4810T225	00000	5273N145	00000
		1	1	150	Hex	300 psi @ 72° F	150 psi @ 350° F	4810T226	00000	5273N146	00000
		1 1/4	1 1/4	150	Hex	300 psi @ 72° F	150 psi @ 350° F	4810T644	00000	5273N147	00000
		1 1/2	1 1/2	150	Hex	300 psi @ 72° F	150 psi @ 350° F	4810T228	00000	5273N148	00000
		2	2	150	Hex	300 psi @ 72° F	150 psi @ 350° F	4810T239	00000	5273N149	00000

Straight Reducing Adapters

Male × Male

	Pipe Size				316 Stainless Steel
	(A)	(B)	Pressure Class	Body Shape	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
BSPT Male × NPT Male



		1/4	1/8	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N151	000000


		3/8	1/8	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N152	00000
		3/8	1/4	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N153	00000
		1/2	1/8	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N154	00000
		1/2	1/4	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N155	00000
		1/2	3/8	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N156	00000
		3/4	1/4	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N157	00000
		3/4	3/8	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N158	00000
		1	3/8	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N159	00000
		1	1/2	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N161	00000
		1	3/4	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N162	00000


		1 1/4	3/4	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N163	00000
		1 1/4	1	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N164	00000
		1 1/2	3/4	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N165	00000
		1 1/2	1	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N166	00000
		1 1/2	1 1/4	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N167	00000
		2	1	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N168	00000
		2	1 1/4	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N169	00000
		2	1 1/2	150	Hex	300 psi @ 72° F	150 psi @ 350° F	5273N171	00000

Locknuts

NPSL Thread—NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.

DIN 431—Locknuts that meet DIN 431 comply with international standards for pipe fitting locknut dimensions.

					304 Stainless Steel		316 Stainless Steel
	Pipe Size	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Specs. Met		Each		Each
NPSL Female



		1/8	300 psi @ 72° F	150 psi @ 350° F	—	4464K581	00000	4452K671	00000


		1/4	300 psi @ 72° F	150 psi @ 350° F	—	4464K582	0000	4452K672	0000
		3/8	300 psi @ 72° F	150 psi @ 350° F	—	4464K583	00000	4452K673	00000
		1/2	300 psi @ 72° F	150 psi @ 350° F	—	4464K584	00000	4452K674	00000
		3/4	300 psi @ 72° F	150 psi @ 350° F	—	4464K585	00000	4452K675	00000
		1	300 psi @ 72° F	150 psi @ 350° F	—	4464K586	00000	4452K676	00000
		1 1/4	300 psi @ 72° F	150 psi @ 350° F	—	4464K587	00000	4452K677	00000
		1 1/2	300 psi @ 72° F	150 psi @ 350° F	—	4464K588	00000	4452K678	00000
		2	300 psi @ 72° F	150 psi @ 350° F	—	4464K589	00000	4452K679	00000


		BSPP Female



				1/8	Not Rated	Not Rated	DIN 431	9027N101	0000	———	0


				1/4	Not Rated	Not Rated	DIN 431	9027N102	0000	———	0
				3/8	Not Rated	Not Rated	DIN 431	9027N103	0000	———	0
				1/2	Not Rated	Not Rated	DIN 431	9027N104	0000	———	0
				3/4	Not Rated	Not Rated	DIN 431	9027N106	0000	———	0
				1	Not Rated	Not Rated	DIN 431	9027N107	00000	———	0

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe

Designed for low-pressure flow applications, this pipe is also known as Schedule 40.

Pipe Adapters—Fully Threaded

Male × Male

Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.

304/304L Stainless Steel—Pipe holds up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

Welded—Pipe has a weld bead on the inside.

	Pipe Size					304/304L Stainless Steel
	(A)	(B)	Lg.	Construction	Pipe Schedule		Each
BSPT Male × NPT Male



		1/8	1/8	3/4"	Welded	40	2427K111	00000


		1/4	1/4	7/8"	Welded	40	2427K121	0000
		3/8	3/8	1"	Welded	40	2427K131	0000
		1/2	1/2	1 1/8"	Welded	40	2427K141	0000
		3/4	3/4	1 3/8"	Welded	40	2427K151	0000
		1	1	1 1/2"	Welded	40	2427K161	0000
		1 1/2	1 1/2	1 3/4"	Welded	40	2427K171	00000
		2	2	2"	Welded	40	2427K181	00000

Pipe Adapters—Threaded on Both Ends

Male

304/304L Stainless Steel—Pipe holds up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

316/316L Stainless Steel—Pipe is the most corrosion resistant. It stands up to wet environments, just like 304 stainless steel pipe, but unlike 304 stainless steel, it will not corrode from salt water, chlorine solutions, and chemicals.

Welded—Pipe has a weld bead on the inside.

				304/304L Stainless Steel		316/316L Stainless Steel
	Lg.	Construction	Pipe Schedule		Each		Each
BSPT Male × NPT Male







				1/8 Pipe Size

				3/4"	Welded	40	———	0	5470N178	00000


				1 1/2"	Welded	40	2427K112	00000	5470N187	0000
				2"	Welded	40	2427K311	0000	5470N192	0000
				3"	Welded	40	2427K113	0000	5470N2	0000
				4"	Welded	40	2427K321	0000	5470N209	0000
				6"	Welded	40	2427K331	0000	5470N218	00000
				12"	Welded	40	2427K341	00000	5470N227	00000
				36"	Welded	40	———	0	5470N236	00000




						1/4 Pipe Size

						7/8"	Welded	40	———	0	5470N179	0000


						1 1/2"	Welded	40	2427K122	0000	5470N188	0000
						2"	Welded	40	2427K312	0000	5470N193	0000
						3"	Welded	40	2427K123	0000	5470N201	0000
						4"	Welded	40	2427K322	0000	5470N21	0000
						6"	Welded	40	2427K332	0000	5470N219	00000
						12"	Welded	40	2427K342	00000	5470N228	00000
						36"	Welded	40	2427K124	00000	5470N237	00000




								3/8 Pipe Size

								1"	Welded	40	———	0	5470N18	0000


								1 1/2"	Welded	40	2427K132	0000	5470N189	0000
								2"	Welded	40	2427K313	0000	5470N194	0000
								3"	Welded	40	2427K133	0000	5470N202	0000
								4"	Welded	40	2427K323	0000	5470N211	0000
								6"	Welded	40	2427K333	00000	5470N22	00000
								12"	Welded	40	2427K343	00000	5470N229	00000
								36"	Welded	40	2427K134	00000	5470N238	00000




										1/2 Pipe Size

										1 1/8"	Welded	40	———	0	5470N181	0000


										1 1/2"	Welded	40	2427K142	0000	5470N19	0000
										2"	Welded	40	2427K314	0000	5470N195	0000
										3"	Welded	40	2427K143	0000	5470N203	00000
										4"	Welded	40	2427K324	0000	5470N212	00000
6"										Welded	40	2427K334	00000	5470N221	00000
12"	Welded									40	2427K344	00000	5470N23	00000
36"	Welded									40	2427K144	00000	5470N239	000000




		3/4 Pipe Size

		1 3/8"	Welded							40	———	0	5470N182	0000


		1 1/2"	Welded							40	2427K152	0000	5470N191	0000
		2"	Welded							40	2427K315	0000	5470N196	0000
		3"	Welded							40	2427K153	0000	5470N204	00000
		4"	Welded							40	2427K325	00000	5470N213	00000
		6"	Welded							40	2427K335	00000	5470N222	00000
		12"	Welded							40	2427K345	00000	5470N231	00000
		36"	Welded							40	2427K154	00000	5470N24	000000




				1 Pipe Size

				1 1/2"	Welded					40	———	0	5470N183	0000


				2"	Welded					40	2427K316	0000	5470N197	00000
				3"	Welded					40	2427K163	00000	5470N205	00000
				4"	Welded					40	2427K326	00000	5470N214	00000
				6"	Welded					40	2427K336	00000	5470N223	00000
				12"	Welded					40	2427K346	00000	5470N232	00000
				36"	Welded					40	2427K164	00000	5470N241	000000




										1 1/4 Pipe Size

						1 5/8"	Welded			40	———	0	5470N184	00000


						2"	Welded			40	———	0	5470N198	00000
						3"	Welded			40	———	0	5470N206	00000
						4"	Welded			40	———	0	5470N215	00000
						6"	Welded			40	———	0	5470N224	00000
						12"	Welded			40	———	0	5470N233	00000
						36"	Welded			40	———	0	5470N242	000000




										1 1/2 Pipe Size

								1 3/4"	Welded	40	———	0	5470N185	00000


								2"	Welded	40	2427K317	00000	5470N199	00000
								3"	Welded	40	2427K173	00000	5470N207	00000
								4"	Welded	40	2427K327	00000	5470N216	00000
								6"	Welded	40	2427K337	00000	5470N225	00000
								12"	Welded	40	2427K347	00000	5470N234	00000
								36"	Welded	40	———	0	5470N243	000000




										2 Pipe Size

2"	Welded									40	———	0	5470N186	00000


3"	Welded									40	2427K183	00000	5470N208	00000
4"	Welded									40	2427K328	00000	5470N217	00000
6"	Welded									40	2427K338	00000	5470N226	00000
12"	Welded									40	2427K348	00000	5470N235	000000
36"	Welded									40	———	0	5470N244	000000

Extreme-Pressure Stainless Steel Threaded Pipe Fittings

With the strength to handle extreme pressures, these fittings can be used to connect equipment in hydraulic fluid lines.

Straight Adapters

Male x Male

	Pipe Size		Dash Size			316 Stainless Steel
	(A)	(B)	(A)	(B)	Body Shape	Max. Pressure @ Temp.		Each
NPT Male × BSPT Male



		1/4	1/4	04	04	Hex	6,000 psi @ 72° F	4822T234	000000


		3/8	3/8	06	06	Hex	5,500 psi @ 72° F	4822T235	00000
		1/2	1/2	08	08	Hex	4,500 psi @ 72° F	4822T236	00000
		3/4	3/4	12	12	Hex	3,500 psi @ 72° F	4822T237	00000
		1	1	16	16	Hex	3,000 psi @ 72° F	4822T238	00000

Locknuts

					303 Stainless Steel
	Pipe Size	Dash Size	Gasket Material	Max. Pressure @ Temp.		Each
NPT Female



		1/4	04	PTFE	10,000 psi @ 72° F	5530K38	000000


		3/8	06	PTFE	10,000 psi @ 72° F	5530K39	00000
		1/2	08	PTFE	10,000 psi @ 72° F	5530K44	00000
		3/4	12	PTFE	5,000 psi @ 72° F	5530K45	000000
		1	16	PTFE	5,000 psi @ 72° F	5530K46	000000